What is the time that it takes for half of the chemical or toxin to be expelled from the body?

Which step would a state health department most likely take to reduce lead exposure? promote health-planning operations to limit lead exposure at home.evaluate the number of countries affected by lead exposure.create general national guidelines for working with lead.carry out research on the worldwide effects of lead products.

Select the correct answer mike tells his teacher that he fears wetting his bed and feels that he should run away from home. what could be the probable cause of mike's fears? a mike could be throwing a tantrum. b. mike could be facing abuse from his parents. c. mike could be disobedient. d. mike could be neglected by his parents

Which of these is likely to be the best source of valid health information?